One win was enough for the Mets to regain some of their swagger. "We're the best team in the league," slugger Carlos Delgado said Thursday, before the start of a four-game series at Florida. "We have been doing it the whole year." The Mets have spent most of the season atop the NL East, but a victory Wednesday at Washington was their first in a week. The win snapped a five-game losing streak, and combined with second-place Philadelphia's loss to St. Louis, increased New York's division lead to 2 1/2 games.